Mountain stream, mini waterfall

Sierra de La Cabrera.
Rosemary in the foreground. I usually follow the direct line of this stream as it is often only a trickle and always dry in the summer. But there had been heavy rain the week before so I went up the boring zigzag path instead!
I don't know what the stone structure is above. But it may have something to do with providing a chimney for the fumes from the train tunnel a long way beneath the granite. And I know this is pretty much directly above. I have walked this tunnel. Good fun! www.ipernity.com/doc/2247598/45765454/in/album/987282